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L t e e h J S t e e h S 2 (No Model.)

D. RALSTON.

CLEARING ATTAGHMENT FOR HARVESTER PLATFORMS.

No. 365,097. Patented June 21, 1-887.

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N. PETERS. Mo-uuw n hm. Walhinglun. 9J2.

2 Sheets-Sheet 2.

(No Model.)

s M R O F T A L P R E T S AF T M H HU A m m A G N I R A B No. 365,097. Patented June 21, 1887.

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UNTTED STATES PATENT GEETQE- DAVID EALSToN, OF cAELISLE, PENNSYLVANIA, ASSIGNOR or ONE-FOURTH TO JAMES M. RALSTON, JR, 0E oeEAN enovE, NEW JERSEY.

CLEARING ATTACHMENT FOR HARVESTER-PLATFORMS.

SPECIFICATION forming part of Letters Patent No. 365,097, dated June 21, 1887.

Application filed Or Label 5, 1886. Serial No. 5,390. (No model.)

To all whom it may concern.-

Be it known that 1, DAVID RALSTON, a citizen of the United States, residing at Oarlisle, in the county of Cumberland and State of Pennsylvania, have invented certain new and useful Improvements in Clearing-Attachments for Harvester'Platforms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to reaper attachments for preventing the clogging of the cut grain on the platform; and it consists in the construction and arrangement of the parts of the same, which will be more fully hereinafter described, and pointed out in the claims.

The object of my invention is to provide a device to be applied in connection with a reaper which is adapted to prevent the cut grain from clogging on the platform and thereby aid in its passage up the elevator, said device being simple and effective in its construction, easily handled and operated, readily understood, and positive in its action. I attain these objects by the device illustrated in the accompanying drawings, wherein like letters of reference indicate similar parts in the sore ral views, and in which- Figure 1 isa perspective elevation ofa portion of a reaper with my improvement applied in connection therewith. Fig. 2isa front eleration of the device with one of the caps rcmoved, showing the internal construction. Fig. 3 is a longitudinal vertical section of the same. Fig. 4 is a detail perspective view of one of the arms.

This device is adapted to be preferably used in connection with a sclt'-biinlcr,aud is inbuntcd on the end of a suitable crank-shaft, S. The

straw falls upon the platform-canvas D, and

as it moves toward the point C it is taken up by the elevator-canvas E. The straw or other material to be bound is always most likely to clog at the corner 0, where the said straw leaves the platfornrcanvas D, and is carried up by the elevator-canvas E. At this point my improved feed is mounted, consisting, cssentially, of a hollow disk-casing, A, mounted on the end of a suitable crank-shaft, S, as heretofore described. In this casing A one or more arms, B B, are mounted, passing through apertures a a in the peripheral edge of the said casing. These arms B B are formed with angular curved projections b b, which extend into the internal portion of the said casing A, being pivoted at the points I) I) by means of the pins If I), the outer ends of the said arms being formed inclined or beveled, as at b b". The crankshaft S passes through the casing A, being secured to the outer cap of the same, as shown in Fig. 8.

On the shaft S a hollow shaft or sleeve, S, is mounted, which passes through the cap of the casing A opposite to that to which the 6 shaft S is secured, said Shaft S being mounted in a stationary position. On the end of the shaft S a cam, F, is rigidly mounted, being arranged at an inclination to the vertical diameter of the disk A. The arms B B have two motions--a revolving and a kicking motion. The first motion is produced by the revolution of the shaft S, and the second motion by the arms dropping from a perpendicular produced by the force of gravitation acting thereupon. In the revolution of the said arms B the curved angular projections I) come into contact with the stationary cam F just when the said arms are in a perpendicular dependent position, or at the time when a temporary 8o rigid position is required in passing the point C, so that the extended ends of the said arms B may come into contact with the butts of the cut material and force it away from the corner 0. W'hen the arms have performed this func- 8 5 tion, the shaft S will have turned the said arms backward, and the one which has just operated in conjunction with the material on the platform will become disengaged from the stationary cam F and slightly drop back, because of its free unengagcd arrangement at this time. By this means the arms B are allowed to pass over the material and resume their revolution unimpeded and avoid the lifting of any of the cut material therewith,which 5 would materially interrupt the action of the said arms. This action of the arms 13 continues, keeping the grain from clogging the from the nature and principle of my invention.

Having thus described my invention, what 1 claim as new, and desire to secure by Letters Patent. is- I 1. The attachment for preventing clogging of the p1atformcarrie'rs of reapers, comprising a rotary shaft and an incasing disk or housing rigidly connected therewith, a fixed tubular sleeve or shaft surrounding said rotary shaft and entering said casing, a rigid cam extend 'ing radially from the fixed shaft and lying within the casing, and a series of angular arms pivoted within the casing upon the margin of its inner side, and extending at their inner ends into engagement with the said rigid cam, 25 substantially as and for the purpose described.

2. The combination, with the rotating shaft S, the case or housing A, rigidly attached thereto, and the arms 13, pivoted at 1). upon said casing, of the rigid tubular sleeve or shaft 0; provided with the rigid cam F, lying within said casing and extending into operative con' tact with the inner ends of the arms B, substantially as and for the purpose set forth.

In testimony whereof I aifix my signatnrein 5 presence of two witnesses.

DAVID RALSTON.

\Vitnesses:

JoIIN It. MILLER, B. K. GOODYEAR. 

